ASP.NET MVC实现多个按钮提交的方法

public class MultiButtonAttribute : ActionNameSelectorAttribute
{
 public string Name { get; set; }
 public MultiButtonAttribute(string name)
 {
  this.Name = name;
 }
 public override bool IsValidName(ControllerContext controllerContext,
  string actionName, System.Reflection.MethodInfo methodInfo)
 {
  if (string.IsNullOrEmpty(this.Name))
  {
   return false;
  }
  return controllerContext.HttpContext.Request.Form.AllKeys.Contains(this.Name);
 }
}

方法四：改进

Controller： 

[HttpPost] 
[MultiButton(Name = "delete", Argument = "id")] 
public ActionResult Delete(string id) 
{ 
var response = System.Web.HttpContext.Current.Response; 
response.Write("Delete action was invoked with " + id); 
return View(); 
} 

View:

<input type="submit" value="not important" name="delete" />
<input type="submit" value="not important" name="delete:id" />

MultiButtonAttribute定义： 

代码

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)] 
public class MultiButtonAttribute : ActionNameSelectorAttribute 
{ 
public string Name { get; set; } 
public string Argument { get; set; } 

public override bool IsValidName(ControllerContext controllerContext, string 
actionName, MethodInfo methodInfo) 
{ 
var key = ButtonKeyFrom(controllerContext); 
var keyIsValid = IsValid(key); 

if (keyIsValid) 
{ 
UpdateValueProviderIn(controllerContext, ValueFrom(key)); 
} 

return keyIsValid; 
} 

private string ButtonKeyFrom(ControllerContext controllerContext) 
{ 
var keys = controllerContext.HttpContext.Request.Params.AllKeys; 
return keys.FirstOrDefault(KeyStartsWithButtonName); 
} 

private static bool IsValid(string key) 
{ 
return key != null; 
} 

private static string ValueFrom(string key) 
{ 
var parts = key.Split(":".ToCharArray()); 
return parts.Length < 2 ? null : parts[1]; 
} 

private void UpdateValueProviderIn(ControllerContext controllerContext, 
string value) 
{ 
if (string.IsNullOrEmpty(Argument)) return; 
controllerContext.Controller.ValueProvider[Argument] = new ValueProviderResult
 (value, value, null); 
} 

private bool KeyStartsWithButtonName(string key) 
{ 
return key.StartsWith(Name, StringComparison.InvariantCultureIgnoreCase); 
} 
} 

//如果是在MVC 2.0中的话，将UpdateValueProviderIn方法改为：

private void UpdateValueProviderIn(ControllerContext controllerContext, string value)
{
 if (string.IsNullOrEmpty(Argument))
 return;
 controllerContext.RouteData.Values[this.Argument] = value;
} 

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